Cajun Chicken Alfredo

Ingredients (9)

• + ½ (16 ounce) package bow-tie pasta, or more to taste add to pantry
• + 4 skinless, boneless chicken breasts, cut into bite-size pieces add to pantry
• + 2 teaspoons Creole seasoning (such as Tony Chachere's®), divided add to pantry
• + 1 tablespoon vegetable oil add to pantry
• ✓ 1 onion, chopped
• + 1 red bell pepper, sliced add to pantry
• + 1 green bell pepper, sliced add to pantry
• + 1 (16 ounce) jar Alfredo sauce add to pantry
• + 1 tablespoon grated Parmesan cheese, or to taste add to pantry